Your name is David Andrys, you work for the Maxer Corporation, the biggest corporation in the world. Then some day an accident happens in the complex p-46 during an experiment, the test-chamber a-14 was completely destroyed, and there were no survivors. Now they are evacuating the entire complex, there's something there, and it's not human. Now 3 hours later David and his team gets there, and he has a mission, kill everything and everyone that is not human, but he will discover a portal between heaven, hell and earth, and this portal is growing. You'll have to fight against zombies, demons, robots, monsters,
death angels, the four horsemen of the apocalypse and anarky, the supreme demon.